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Issue 34, 2010
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Facile synthesis and stable lithium storage performances of Sn- sandwiched nanoparticles as a high capacity anode material for rechargeable Li batteries

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Abstract

A simple synthetic route was developed to obtain Sn-sandwiched composite nanoparticles by mechanical ball-milling ductile Sn particles with rigid SiC nanocores to form a SiC@Sn core-shell nanocomposite and then carbon-coating the SiC@Sn nanoparticles with graphite to produce the SiC@Sn@C nanoparticles. Such a novel nanostructure can effectively buffer the mechanical stress and prevent the aggregation of the Sn nanolayer and therefore improve the electrochemical utilization and cycling stability of electroactive Sn during Li-storage reaction. The Sn-sandwiched nanoparticles as-prepared exhibited a considerable high Li-storage capacity of ∼600 mA h g−1 and an excellent cycling stability with ∼90% capacity retention at 100 cycles, showing a prospect for practical lithium battery applications. In particular, the reported synthetic method is very simple, low-cost and pollution-free, enabling it to be readily adopted for large-scale production and also to be extended for other attractive lithium storage metals and alloys.

Graphical abstract: Facile synthesis and stable lithium storage performances of Sn- sandwiched nanoparticles as a high capacity anode material for rechargeable Li batteries

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Publication details

The article was received on 25 Mar 2010, accepted on 14 Jun 2010 and first published on 27 Jul 2010


Article type: Paper
DOI: 10.1039/C0JM00829J
Citation: J. Mater. Chem., 2010,20, 7266-7271
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    Facile synthesis and stable lithium storage performances of Sn- sandwiched nanoparticles as a high capacity anode material for rechargeable Li batteries

    Z. Chen, Y. Cao, J. Qian, X. Ai and H. Yang, J. Mater. Chem., 2010, 20, 7266
    DOI: 10.1039/C0JM00829J

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